Adelaida District is an American Viticultural Area (AVA) located in San Luis Obispo County, California and within the multi-county Central Coast AVA. It was established on October 8, 2014 by the Alcohol and Tobacco Tax and Trade Bureau (TTB), Treasury after reviewing the petitions submitted in 2007 by the Paso Robles American Viticultural Area Committee (PRAVAC) to establish 11 new viticultural areas located entirely within the existing 669,253 acres (1,046 sq mi) Paso Robles viticultural area adjacent to the northern boundary of San Luis Obispo County. The proposed viticultural areas were: Adelaida District, Creston District, El Pomar District, Paso Robles Estrella District, Paso Robles Geneseo District, Paso Robles Highlands District, Paso Robles Willow Creek District, San Juan Creek, San Miguel District, Santa Margarita Ranch, and Templeton Gap District. The 59 wine industry members who constitute PRAVAC cumulatively own or manage over 10,000 acres (4,047 ha) of cultivated vineyards within the proposed AVAs. Wineries located within the Adelaida District are: The Farm Winery, Peachy Canyon Winery, Le Cuvier, Alta Colina, Carmody McKnight Estate Wines, Wild Coyote, Villicana, McPrice Myers, Jacob Toft, Chronic Cellars, Vines on the Marycrest, Nenow Family Wines, Hawks Hill Ranch, Adelaida Cellars, DAOU, Calcareous, Law Estate, Nadeau, Minassian Young, Michael Gill, Villa Creek, Brecon, HammerSky, Oso Libre, Poallilo, Thacher Winery, Whalebone Vineyard, Tablas Creek Vineyard, Halter Ranch, Rangeland, Justin, Kukkula, Dubost, and Starr Ranch.

In the early 1920s, Ignacy Jan Paderewski, a noted pianist, composer and prime minister of Poland, planted Petite Sirah and Zinfandel on his Rancho San Ignacio vineyard in the Adelaida area. In 1964, Dr. Stanley Hoffman purchased 1,200 acres (486 ha) in the locale with the assistance of influential winemaker André Tchelistcheff and established vineyards creating the Hoffman Mountain Ranch Winery (HMR), the first modern commercial winery to be built in San Luis Obispo County after Prohibtion, was designed and constructed from 1972 to 1975.

The Adelaida District AVA encompasses 53,342 acres (83 sq mi) with 883 acres (357 ha) cultivated. The area lies in the Santa Lucia Range with high mountain slopes grading to foothills with elevations spanning 900 to 2,200 feet (270–670 m). The average annual rainfall is 25 inches (640 mm).

The district's calcareous soils consist of shallow, bedrock residual soils and patchy colluvial hillside soils from middle member of Monterey Formation and older rocks.

The most widely planted varieties in the Adelaida District AVA are Mourvèdre, Zinfandel, Cabernet Sauvignon, Syrah, Grenache and Merlot.

• Adelaida District
• Adelaida District in Paso Robles
• Paso Robles Wine Country Alliance
• TTB AVA Map

35°38′28″N 120°49′45″W / 35.6410842°N 120.8292071°W / 35.6410842; -120.8292071